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Printed in U.S.A. LIT 4321972February, 1996
SERVICE MANUAL
for the
30
"
ELECTRIC MODULAR
DOWNDRAFT COOKTOP
- ii -
THIS MANUAL CONTAINS INFORMATION
NECESSARY FOR INSTALLING AND SER-
VICING THE FOLLOWING WHIRLPOOL 30
"
ELECTRIC MODULAR DOWNDRAFT
COOKTOP, MODEL:
RC8700ED
RC8720ED
THE MANUAL IS DESIGNED TO BE USED
ONLY BY QUALIFIED SERVICE PERSON-
NEL. THE SERVICE INFORMATION IS OR-
GANIZED TO HELP YOU EASILY FIND WHAT
YOU NEED.
CHECK YOUR LOCAL BUILDING CODE FOR
THE PROPER MODE OF INSTALLATION. IN
THE ABSENCE OF LOCAL CODES, THIS UNIT
SHOULD BE INSTALLED IN ACCORDANCE
WITH THE
NATIONAL ELECTRICAL CODE,
ANSI/NFPA NO. 70 - 1990, OR C22.1 CANA-
DIAN ELECTRICAL CODE, PART 1
.
Page iii
- iii -
Cooking Products Service Manual
Original April, 1996 4321973
© 1996 Whirlpool Corporation
Important Safety Information ....................................................................................................... iv
Installation Highlights .......................................................................................................................1-1
Before You Start ..........................................................................................................................1-1
Cooktop Dimensions ...................................................................................................................1-1
Cutout Dimensions ......................................................................................................................1-2
Clearance Dimensions ................................................................................................................1-2
Tools & Material You Will Need ................................................................................................1-3
Venting Requirements ................................................................................................................1-4
Installing The Cooktop ............................................................................................................. 1-10
Electrical Supply Requirements ............................................................................................. 1-11
Electrical Connections ............................................................................................................. 1-12
Venting Operation Check ........................................................................................................ 1-15
Theory Of Operation .........................................................................................................................2-1
The Coil Elements .......................................................................................................................2-1
The Radiant Elements ................................................................................................................2-2
The Grill Elements.......................................................................................................................2-3
The Fan Motor..............................................................................................................................2-4
Component Access ...........................................................................................................................3-1
Cooktop Components..................................................................................................................3-1
Component Locations .............................................................................................................3-1
Removing The Control Panel & The Surface Unit Indicator Light....................................3-2
Removing The Control Switch ...............................................................................................3-3
Removing The Maintop ...........................................................................................................3-4
Removing The Cooktop ..........................................................................................................3-4
Removing A Terminal Block ...................................................................................................3-6
Removing The Fan Motor .......................................................................................................3-7
Module Components ...................................................................................................................3-8
The Ceramic Surface Unit RCM30DB/Q — Removing
The Glass, Element, Or Limiter .........................................................................................3-8
The Coil Surface Unit RCM10DB/Q — Removing
A Coil Element & Connector............................................................................................ 3-10
The Grill RCM20DB — Removing The Grill Element ...................................................... 3-12
Removing A Terminal Plug Connector .............................................................................. 3-13
Component Testing ...........................................................................................................................4-1
Troubleshooting ...........................................................................................................................4-1
Tech Tips ............................................................................................................................................5-1
Schematic Diagram — Model RC8700ED................................................................................5-1
Wiring Diagram— Model RC8700ED ........................................................................................5-2
Schematic Diagram — Model RC8720ED................................................................................5-3
Wiring Diagram— Model RC8720ED ........................................................................................5-4
Strip Circuits.................................................................................................................................5-5
Specifications ...............................................................................................................................5-6
Model Number Designation..................................................................................................... 5-10
30
"
Electric Modular Downdraft Cooktop Warranty ............................................................. 5-11
Page
Table of Contents
- iv -
IMPORTANT SAFETY INFORMATION
Fire Hazard
Do not obstruct the flow of combustion and
ventilation air.
Electrical Shock Hazard
It is the customer’s responsibility to:
• Contact a qualified electrical installer.
• Assure that electrical installation is ad-
equate and in conformance with the Na-
tional Electrical Code, ANSI/NFPA 70—
latest edition*, and all local codes and or-
dinances.
• Take special care when drilling holes into
the wall for venting or electrical wiring.
Electrical wires may be concealed behind
the wall covering.
• Disconnect the power to any electrical
circuits that could be affected by the instal-
lation of this cooktop.
Failure to do so could result in fire, electrical
shock, or other personal injury.
Personal Injury Hazard
To eliminate the risk of burns or fires, do not
install cabinets or store things above the
cooktop. If cabinets are already installed
above the cooktop, install a range hood to the
bottom of the cabinet to prevent reaching over
the heated cooking surface. The range hood
should stick out a minimum of 5-inches (12.7
cm) from the front of the cabinets.
Reaching over a heated cooking surface
could result in a serious burn or other in-
jury.
* Copies of the standards listed above may
be obtained from:
WARNING
This service manual is intended for factory-service
technicians only. We recommend that customers
DO NOT service their own units, because of the
complexity and risk of high-voltage electrical shock.
The following information is used throughout this
manual, and should be read carefully.
National Fire Protection Association
Batterymarch Park
Quincy, Massachusetts 02269
Information that will help you avoid actions
that could cause product damage (scratches,
dents, etc.) and damage to personal property.
CAUTION
WARNING
Information that alerts you to potentially dan-
gerous conditions. These conditions can
cause serious personal injury (burns, fire and
electrical shock, etc.) if the suggested proce-
dures are not observed.
1-1
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-1
BEFORE YOU START
Proper installation is your responsibility. Make
sure that you have everything necessary to
properly install the cooktop. It is the responsi-
bility of the installer to comply with the instal-
lation clearances specified on the model/se-
rial rating plate. This plate is located on the left
side of the cooktop’s plenum.
The location where the cooktop is installed
should be away from strong draft areas, such
as windows, doors, and strong heating vents
or fans.
The venting duct must terminate outdoors. All
openings in the wall or floor where the cooktop
is to be installed must be sealed.
This appliance is not approved for use in mo-
bile homes.
INSTALLATION HIGHLIGHTS
COOKTOP DIMENSIONS
29-7/8
"
(75.9 cm)
width
21-1/2
"
(54.6 cm)
depth
grease
containers
12-7/16
"
(31.6 cm)
11-7/8
"
(30.2 cm)
3-3/4
"
(9.5 cm)
burner box
depth
16-7/16
"
(41.8 cm)
blower housing
depth
Appliance junction
box is located
under right side
of cooktop.
Blower can be
swiveled 90˚.
1-2
CLEARANCE DIMENSIONS
30
"
(76.2 cm) minimum
when higher than 18
"
(45.7 cm)
13
"
(33 cm)
maximum
upper
cabinet
depth
See NOTE
for minimum
clearances.
3/4
"
(1.9 cm)
18
"
(45.7 cm)
minimum
clearance upper
cabinet to
countertop
Side Clearance: 6
"
(15.2 cm) minimum
clearance between side of cooktop and
side wall is recommended for maximum
ventilation performance.
Rear Clearance: 3/4
"
(1.9 cm) clear-
ance between rear edge of appliance
and rear wall is required.
Motor/Blower Clearance: 2
"
(5.1 cm)
minimum clearance between motor and
cabinet is required for proper cooling. 6
"
(15.2 cm) clearance is recommended
for servicing access.
6
"
both sides
(15.2 cm)
Minimum distance to nearest
combustible vertical surface
extending 18
"
(45.7 cm) above
cooktop
Do not seal cooktop to countertop.
Installation location
should provide sufficient
room for removing
grease containers.
NOTE: 24
"
(61.0 cm) minimum when bottom of wood or metal
cabinet is protected by not less than 1/4
"
flame-retardant
millboard covered with not less than #28 MSG sheet steel, 0.015
"
stainless steel, 0.024
"
aluminum, or 0.020
"
copper.
30
"
(76.2 cm) minimum clearance between the top of the cooking
platform and bottom of unprotected wood or sheet metal.
CUTOUT DIMENSIONS
27-7/8
"
(73.3 cm)
cutout width
15/16
"
(2.4 cm)
minimum
distance to
backsplash
or vertical
wall
20-7/8
"
(53.2 cm)
cutout depth
1-7/8
"
(4.8 cm)
minimum space
to front edge of
countertop
Select required
duct cutout
(see page 1-5
for exhaust duct
cutout location)
Countertop must be
supported within
3
"
(7.6 cm) of cutout
countertop
Install rear
wall junction
box in shaded
area. Darker
shaded area is
preferred.
floor 11
"
(27.9 cm)
5
"
(12.7 cm)
8
"
(20.3 cm)
17
"
(43.2 cm)
Cutout Preparation:
Decorative laminate —
Chamfer all exposed edges to
prevent chipping laminate.
Cut radius corners and file to
smooth edges to prevent
cracking.
Minimum Base Cabinet Dimensions:
30
"
(76.2 cm) base cabinet
24
"
(61.0 cm) base cabinet depth
25
"
(63.5 cm) countertop depth
1-3
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-3
ILLUSTRATION
DESCRIPTION
Phillips screwdriver
Metal cutters
Gloves
Caulk gun with weatherproof caulk
Electric or hand drill
Pliers
Safety glasses
Measuring tape
Duct tape
NOT SHOWN:
Wall or roof cap
Metal ductwork
2 sheet metal screws to attach transition duct
to venting adapter.
Two U.L.-listed 1/2
"
conduit connectors.
Flexible, armored, or nonmetallic sheathed
copper cable (with grounding wire) that con-
forms to existing codes (see “Electrical Sup-
ply Requirements” on page 1-11).
Twist-on connectors (number and size de-
pends on installation).
TOOLS & MATERIAL YOU WILL NEED
1-4
VENTING REQUIREMENTS
WARNING
Fire Hazard
The venting system must terminate outdoors.
Do not end the ductwork in an attic, wall,
ceiling, or other enclosed space.
Do not use 4
"
laundry-type wall caps.
Do not use plastic duct.
Do not block the flow of ventilation air.
Failure to follow these instructions could
result in a fire.
For the quietest and most efficient operation:
• Use 26-gauge minimum galvanized, or 25-
gauge minimum, aluminum metal duct.
Poor-quality pipe fittings can reduce air
flow. (Note: Local codes may require a
heavier-gauge material.) Flexible metal
duct is not recommended.
• Do not exhaust more than one downdraft
cooktop into a single duct system.
• Keep the length of duct and number of
elbows to a minimum.
• Keep the size of the duct uniform.
• Use no more than three 90˚ elbows.
• Do not install two elbows together.
• If more than one elbow is used, make sure
that there is a minimum of 18
"
(45.7 cm) of
straight duct between them. If elbows are
too close together, they can reduce air-
flow.
• Do not use a 5
"
elbow in a 6
"
, or a 3-1/4
"
x10
"
system. Use a 5
"
to 6
"
transition fol-
lowed by a 6
"
elbow, or a 5
"
to 3-1/4
"
x10
"
elbow transition.
• Do not reduce the duct work back to a 5
"
system after using 6
",
or 3-1/4
"
x10
"
fit-
tings.
• Do not form handmade crimps. They can
restrict airflow.
• Use recommended duct caps. If an alter-
nate wall, or roof cap is used, be certain
that the cap size is not reduced, and that it
has a backdraft damper.
• Use duct tape to seal all joints in the duct
system.
• Use weatherproof caulking to seal the ex-
terior wall or roof opening around the cap.
Before making any cutouts, make sure that
there is proper clearance within the wall or
floor for the exhaust duct. Do not cut a joist
or stud unless it is absolutely necessary. If
a joist or stud must be cut, a supporting
frame must be constructed.
This downdraft cooktop is rated for 60-feet of
straight duct. If duct length is 10 feet (3 m) or
less, 5
"
diameter round ductwork may be used.
If duct length is more than 10 feet (3 m), use 6
"
diameter round or 3-1/4
"
x 10
"
rectangular duct.
Thermal Breaks:
In areas of extreme cold
weather, it may be necessary to provide a
short length of nonmetallic duct as close to the
wall as possible to prevent thermal conduction
along the metal duct.
High Altitudes:
For altitudes above 4,500 ft
(1,350 m), reduce the recommended duct run
by 20%.
1-5
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-5
outside wall
cabinet
inside wall
cabinet
3-1/4
"
x 10
"
transition
elbow
inside wall to roof
or overhang
directly
outside between floor joists
3-1/4
"
x 10
"
cabinet toe space
to outside
transition
elbow
peninsula
peninsula
or island
Determine the best type of venting method to
use. The cooktop can be vented through the
rear wall, or through the floor. Common vent-
ing methods and the types of material needed
are shown below, and on the following page.
Make sure that there is proper clearance within
the wall or floor for the exhaust duct before
making cutouts.
28-7/8
"
(73.3 cm)
20-7/8
"
(53 cm)
opening
for venting
through floor
opening for venting
through rear wall
17-1/2
"
(44.5 cm)
6-15/16
"
(17.6 cm)
14-3/4
"
(37.5 cm)
1-6
6
"
round metal duct
12
"
(30.5 cm)
minimum
concrete
slab
6
"
round
PVC sewer
pipe
wall cap
6
"
round
PVC coupling
6
"
(15.2 cm)
minimum
5
"
to 6
"
round metal transistion
6
"
round metal duct
6
"
round
PVC sewer pipe
16
"
(40.6 cm)
maximum
6
"
round metal duct
6
"
round PVC coupling
concrete slab
6
"
round PVC sewer pipe
6
"
round sewer pipe
6
"
round PVC coupling
5
"
to 6
"
round metal transistion
6
"
round 90˚ PVC
sewer pipe elbow
window well
Tightly pack gravel or sand
completely around pipe.
wall cap
6
"
round 90˚ PVC
sewer pipe elbow
6
"
round PVC coupling
12
"
(30.5 cm)
minimum
Tightly pack gravel or sand
completely around pipe.
6
"
round 90˚ PVC
sewer pipe elbow
30
'
(9.1 m)
maximum
Optional Duct Arrangement Through Window Well Under Concrete Slab
Optional Duct Arrangement Under Concrete Slab
Seal the space be-
tween the outside of
the wall cap inlet and
the inside of the PVC
coupling with weather-
proof caulk.
1-7
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-7
The cooktop is equipped with a dual-range
blower. The blower is factory-set to operate at
the “Low” range (equivalent duct lengths of
30-feet (9.1 m) or shorter. If the equivalent
duct length exceeds 30-feet, the blower must
be set to operate at the “High” range (see page
1-9). Do not change the blower to “High” if
the equivalent duct length is under 30-feet.
This will cause excessive noise and condi-
tioned air loss.
To use the following chart, list the number of
each piece, and the length of straight ductwork
that you intend to use. Multiply the equivalent
length by the number of pieces. Add the totals
to get the total equivalent length of your duct
system. Two duct system configuration ex-
amples are shown on the following page.
Chart
1-8
blower at “low” range
5
"
to 6
"
transition
4
'
(122 cm)
6
'
(183 cm)
2
'
(61 cm)
6
"
, 90˚ elbows
6
"
wall cap
blower at “high” range
5
"
to 6
"
transition
4
'
(122 cm)
6
'
(183 cm)
2
'
(61 cm)
6
"
, 90˚ elbows
3-1/4
"
x 10
"
wall cap
10
'
(305 cm)
4
'
(122 cm)
6
"
to 3-1/4
"
x 10
"
transition
(3) 90˚ elbows = 15 ft. (457.2 cm)
5
"
to 6
"
transition = 1 ft. (30.5 cm)
6
"
to 3-1/4
"
x 10
"
transition = 1 ft. (30.5 cm)
Wall cap = 0 ft. (0 cm)
16
'
(488 cm) 6
"
straight = 16 ft. (488 cm)
10
'
(254 cm) 3-1/4
"
x 10
"
straight = 10 ft. (305 cm)
Example:
(2) 90˚ elbows = 10 ft. (305 cm)
12' (366 cm) straight = 12 ft. (366 cm)
5
"
to 6
"
transition = 1 ft. (30.5 cm)
Wall cap = 0 ft. (0 cm)
Total equivalent length = 23 ft. (701.5 cm)
Blower can be left at “low” range (factory set-
ting).
NOTE: Flexible metal duct is not recommended.
If it is used, calculate each foot as two feet of
straight metal duct. Flexible metal elbows count
twice as much as standard elbows.
Example:
Total equivalent length = 43 ft. (1311.2 cm)
Blower must be set at “high” range by removing
the restrictor ring (see page 1-9).
NOTE: Flexible metal duct is not recommended. If
it is used, calculate each foot as two feet of straight
metal duct. Flexible metal elbows count twice as
much as standard elbows.
6
"
Round Duct System Equivalent Length 30-
feet (9.1 m) Or Less
Set Blower To “Low” Range
6
"
Round Duct System Equivalent Length
Greater Than 30-feet (9.1 m)
Set Blower To “High” Range
1-9
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-9
RESTRICTOR
RING
SPRING
CLIPS
BLOWER
INLET
CHANGING THE RANGE SETTING
IMPORTANT NOTE: This cooktop is equipped
with a dual-range blower. The range is deter-
mined by a “restrictor ring” (see below) on the
inlet of the blower. When the ring is installed,
the blower is at the “low range” setting. When
the ring is removed, the blower is at the “high
range” setting. The blower is shipped from the
factory with the restrictor ring installed. The
“equivalent” duct length shown in the chart on
page 1-7, (not the actual length), determines
how the blower’s range should be set.
1. Determine the equivalent length of duct
(see the chart on page 1-7). If the length is
not more than 30-feet (9.1 m), leave the
blower set at the current low range. If the
duct length exceeds 30-feet, use the fol-
lowing procedure, and remove the restrictor
ring from the blower (set it to the “high”
range).
a) Remove the air grille and filter from
the blower housing.
b) Press in on one of the spring clips that
hold the restrictor ring to the blower
inlet and pull the ring forward to re-
move it.
c) Reinstall the filter and air grille.
2. Rotate the blower to the proper angle
needed for your installation. The blower
can be swiveled 90˚. To rotate the blower:
a) Remove the filter from the blower hous-
ing
b) Loosen, but do not remove, the nuts
around blower inlet.
c) Rotate the blower housing for the
proper angle.
d) Retighten the four nuts and install the
filter.
LOOSEN THESE
4 NUTS
BLOWER
INLET
1-10
INSTALLING THE COOKTOP
To install the cooktop, refer to the following
steps.
1. Lift the cooktop from the shipping carton
and remove the shipping materials, hard-
ware package, and printed material.
CAUTION
Property Damage
Lift the entire cooktop from the cutout when
repositioning the cooktop in the countertop
opening.
Failure to do so could scratch the countertop.
2. Connect the duct system (if necessary,
see pages 1-4 through 1-9 for ducting re-
quirements).
NOTE: It may be easier to connect the cooktop
power supply wiring before it is installed in the
cabinet. If so, connect the conduit coming
from the cooktop to the electrical junction box
at this time (see pages 1-11 through 1-14).
Otherwise, install the cooktop first, and then
connect the electrical wiring.
3. Install the cooktop in the countertop cutout
and center it. Make sure that the front edge
of the cooktop is at least 1-1/2
"
(3.8 cm)
from the front edge of the countertop, 3/4
"
(1.9 cm) from the rear wall, and at least 6
"
(15.2 cm) from the side wall.
4. If not already done, connect the conduit
coming from the cooktop to the electrical
junction box (see “Electrical Supply Re-
quirements” on the following page.
1-11
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-11
ELECTRICAL SUPPLY REQUIREMENTS
Electrical Shock Hazard
An electrical ground is required on this ap-
pliance.
If a cold water pipe is interrupted by plastic,
nonmetallic gaskets, or other insulating
materials, do not use for grounding.
Do not ground to a gas pipe.
Do not use a fuse in the neutral or grounding
circuit. It could result in an electrical shock.
Check with a qualified electrician if you are
in doubt as to whether the appliance is
properly grounded.
Failure to follow these instructions could
result in serious injury or death.
WARNING
• A time-delay fuse, or circuit breaker, is
recommended. The fuse must be sized as
per local codes in accordance with the elec-
trical rating of the appliance specified on
the model/serial rating plate, which is lo-
cated on the left side of the vent’s plenum.
• The cooktop must be connected with cop-
per wire only.
• Wire sizes and connections must conform
to the requirements of the National Electri-
cal Code, ANSI/NFPA 70—latest edition*,
and all local codes and ordinances. Wire
sizes and connections must conform with
the rating of the appliance. Copies of the
standards listed above may be obtained
from:
*
National Fire Protection Association
Batterymarch Park
Quincy, Massachusetts 02269
• The appliance should be connected directly
to the fused disconnect (or circuit breaker)
through flexible, armored, or nonmetallic
sheathed, copper cable with grounding wire.
The flexible, armored cable that extends
from the appliance should be connected
directly to the junction box.
• Locate the junction box to allow as much
slack as possible between the junction box
and the appliance so that the appliance can
be moved if servicing is ever necessary. Do
not cut the conduit.
• A U.L.-listed, 1/2
"
(1.3 cm) conduit connec-
tor must be provided at the junction box.
• A wiring diagram is located in the “Tech
Tips” section of this manual.
GENERAL
If codes permit, and a separate grounding wire
is used, it is recommended that a qualified
electrician determine that the grounding path
is adequate.
The following information applies to appliance
and vent system wiring:
• A 3- or 4-wire, single phase, 120/240-volt,
60 Hz, AC-only electrical supply, or a 3- or
4-wire, 120/208-volt supply, if specified on
the model/serial rating plate, is required on
a separate 40-ampere circuit, fused on both
sides of the line.
1-12
ELECTRICAL CONNECTIONS
WARNING
Electrical Shock Hazard
An electrical ground is required on this
cooktop.
Do not connect to the electrical supply until
the cooktop is permanently grounded.
Disconnect power to the junction box before
making the electrical connection.
This cooktop must be connected to a
grounded, metallic, permanent wiring sys-
tem, or a grounding connector should be
connected to the grounding terminal or wire
lead on the cooktop.
Failure to follow these instructions could
result in death or serious injury.
This appliance is manufactured with a white
(neutral) power supply wire and a cooktop-
connected green (or bare) grounding wire
twisted together.
An appliance cable and connectors are not
provided.
To connect the cooktop power cable to the
main power supply junction box:
1. Turn off the power to the main junction box.
2. Remove the junction box cover from the
junction box inside the cabinet.
3. Remove the cooktop junction box cover
located on the right side of the cooktop.
4. Use a U.L.-listed conduit connector to con-
nect the appliance cable to the junction
box inside the cabinet.
5. Remove the knockout on the side of the
cooktop junction box that fits the size of the
appliance cable.
6. Use a U.L.-listed conduit connector and
connect the appliance cable to the cooktop
junction box.
NOTE: When you connect the cable wires,
together, hold the bare ends next to each
other, and twist a wire connector over them.
7. Connect the two black wires together with
twist-on connectors in both junction boxes.
8. Connect the two red wires together with
twist-on connectors in both junction boxes.
Complete the remaining electrical connections
according to the local codes and ordinances.
If the wire connections are being made at a
cabinet or wall-mounted junction box, refer to
the next page. If connections are being made
at the cooktop junction box, refer to the next
page.
1-13
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-13
cable from power supply
black wires
junction box
red wires
white wire
U.L.- listed
conduit connector
appliance cable
from cooktop
white and bare
grounding
appliance cable
wires
appliance cable
from cooktop
U.L.- listed
conduit connector
black wires
cable from power supply
junction box
red wires
green and bare
grounding wires
white wires
Four-Wire Electrical System
OR
If Local Codes Do Not Permit Connecting
Cooktop Grounding Wire To White (Neutral)
Wire In Junction Box
If Local Codes Permit Connecting Cooktop
Grounding Wire To White (Neutral) Wire In
Junction Box
GROUNDED NEUTRAL
1. Connect the bare and white appliance cable
wires to the white (neutral) power supply
wire.
2. Carefully check each connection and make
sure that it is secure, and that no bare
wires can short together.
3. Twist a wire connector over the free ends
of the white wires.
4. Position the wires inside the junction box,
and install the cover.
UNGROUNDED NEUTRAL
1. Connect the white appliance cable wire to
the white (neutral) power supply wire.
2. Connect the bare grounding appliance
cable wire to the green grounding power
supply wire.
3. Twist wire connectors over the free ends of
the white and green wires. IMPORTANT:
Do not connect the bare grounding wire
to the white (neutral) wires in the junc-
tion box.
4. Carefully check each connection and make
sure that it is secure, and that no bare
wires can short together.
5. Position the wires inside the junction box,
and install the cover.
Wiring To A Cabinet Or A Wall-Mounted Junction Box
1-14
Wiring To The Cooktop Junction Box
GROUNDED NEUTRAL
1. Connect the bare and white appliance cable
wires to the white (neutral) power supply
wire.
2. Carefully check each connection and make
sure that it is secure, and that no bare
wires can short together.
3. Twist a wire connector over the free ends
of the white wires.
4. Position the wires inside the junction box,
and install the cover.
UNGROUNDED NEUTRAL
1. Connect the white appliance cable wire to
the white (neutral) power supply wire.
2. Connect the bare grounding appliance
cable wire to the green grounding power
supply wire.
3. Twist wire connectors over the free ends of
the white and green wires. IMPORTANT:
Do not connect the bare grounding wire
to the white (neutral) wires in the junc-
tion box.
4. Carefully check each connection and make
sure that it is secure, and that no bare
wires can short together.
5. Position the wires inside the junction box,
and install the cover.
red wires
bare or green
grounding
wires
black wires
white wires
Four-Wire Electrical System
OR
If Local Codes Do Not Permit Connecting
Cooktop Grounding Wire To White (Neutral)
Wire In Junction Box
red wires
black wires
white and green or
bare grounding
wires
If Local Codes Permit Connecting Cooktop
Grounding Wire To White (Neutral) Wire In
Junction Box
1-15
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 1-15
1. Make sure that all of the control knobs on
the cooktop’s control panel are turned to
OFF.
2. Install the cartridges, accessories, and
drain jars on the cooktop (refer to the “Use
and Care Guide” for the procedures).
3. Install the air filter in the cooktop vent
chamber, but do not install the air grille.
4. Turn on the power supply to the cooktop
junction box.
5. Locate the flow tester card that was sup-
plied with the cooktop’s printed material.
6. Place the flow tester card on top of the
cooktop so that the edge of the dotted line
labeled “cooktop models” is aligned with
the edge of the blower intake on the left
side of the cooktop near the center.
7. Turn on the fan switch. If the downdraft vent
system is operating properly, the blower
should pull the flow tester card into the air
intake of the cooktop. If the card is not pulled
into the vent, check the ductwork for obstruc-
tions.
Refer to the “Use and Care Guide” for the rest
of the operating procedures.
VENTING OPERATION CHECK
FLOW TESTER
ALIGN SIDE OF DOTTED LINE
MARKED “COOKTOP MODELS”
WITH AIR INTAKE
AIR INTAKEFLOW TESTER
CARD
1-16
— NOTES —
2-1
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 2-1
120-volts to the surface unit indicator light. A resis-
tor inside the switch also energizes and creates a
heat load, which opens cycling contacts L2 to H2.
This controls the element’s “on” time, and therefore
its operating temperature.
The exhaust vent fan can be activated by the
manual fan switch during the operation of the coil
module.
The coil module consists of one 6
",
and one 8
"
element. The elements are controlled by an infinite
switch. When a switch is turned to the Low, Me-
dium or High position, contacts L1 to H1, and L2 to
H2 close, and provide 240-volts to the element. At
the same time, contacts L1 to P close, and provide
THEORY OF OPERATION
THE COIL ELEMENTS
L2
L1
P
H2
H1
SURFACE
UNIT
INDICATOR
COIL ELEMENT
INFINITE SWITCH
L1 L2
120 V
N
2-2
THE RADIANT ELEMENTS
The ceramic glass module consists of one 6
"
and
one 8
"
element. The elements are controlled by an
infinite switch. When a switch is turned to the Low,
Medium or High position, contacts L1 to H1, and L2
to H2 close, and provide 240-volts to the element.
At the same time, contacts L1 to P close, and
provide 120-volts to the surface unit indicator light.
A resistor inside the switch also energizes and
creates a heat load, which opens cycling contacts
L2 to H2. This controls the element’s “on” time, and
therefore its operating temperature.
The exhaust vent fan can be activated by the
manual fan switch during operation of the ceramic
glass module.
L2
L1
P
H2
H1
1A 2A
SURFACE
UNIT
INDICATOR
SENSOR
RADIANT ELEMENT
INFINITE SWITCH
L1 L2
120 V
N
2-3
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 2-3
THE GRILL ELEMENTS
When a switch is turned to the Low, Medium or
High position, contacts L1 to H1, and L2 to H2
close, and provide 240-volts to the element. At the
same time, contacts L1 to P close, and provide
120-volts to the surface unit indicator light.
Whenever one or two grill elements are energized,
infinite switch contact L1 provides 120-volts to the
fan motor. The voltage is supplied to the fan motor
through a metal shunt, or jumper, that is located on
the plug of the grill module.
A 2800-watt grill module is available for use in this
cooktop. The grill consists of a front and rear
element that are controlled by the infinite switches.
Both a front and a rear infinite switch must be
turned on to obtain full area operation of the grill. If
only a front or a back switch is used, only that
portion of the element will be operational.
L2
L1
P
H2
H1
SURFACE UNIT
INDICATOR
GRILL ELEMENT
INFINITE SWITCH
L1 L2
120 V
N
L2
L1
P
H2
H1
INFINITE SWITCH
FAN
SHUNT
2-4
THE FAN MOTOR
AUTOMATIC OPERATION
Whenever the grill module is turned on, contact L1
in the infinite switch provides 120-volts to the fan
motor through a metal shunt, or jumper, in the plug
of the grill element, and the fan motor will operate
automatically.
MANUAL OPERATION
The fan motor is operated by a fan switch that is
located on the control panel of the cooktop. When
the switch is turned “ON,” contacts BK to BR close,
and provide 120-volts to the fan motor.
L1 N
FAN
SWITCH
FAN
MOTOR
BK BR W
3-1
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 3-1
THE COOKTOP COMPONENTS
Component Locations
OPTIONAL GRILL
COVER
OPTIONAL GRIDDLE
AIR GRILLE
OPTIONAL CERAMIC
SURFACE UNIT
OPTIONAL COIL SURFACE
UNIT (MODEL RC8720 USES
NON-REMOVABLE SURFACE
UNITS)
CONTROL PANEL
VENT CHAMBER
DRAIN JARS (MODEL RC8720
USES ONLY ONE JAR)
OPTIONAL GRILL
ELEMENT, GRILL
ROCKS, & GRATES
BASINS
AIR INTAKE VENT
COMPONENT ACCESS
FAN
CONTROL
LF
CONTROL
LR
CONTROL
RR
CONTROL
RF
CONTROL
SURFACE UNIT
INDICATOR
3-2
Removing The Control Panel
& The Surface Unit Indicator Light
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Remove the five control knobs from the
control shafts.
2. Remove the two torx screws and the four
metal inserts from the control panel.
3. Remove the control panel from the
cooktop. If you are replacing the panel,
remove the rubber grommet from the fan
shaft hole and install it in the new panel.
OFF
FAN
ON
RUBBER
GROMMET
CONTROL
PANEL
4. Remove the two torx screws from the fan
control.
SHORT
TORX SCREW
FAN CONTROL
CONTROL COVER
SHORT
TORX SCREW
5. Remove the four hex-head screws from
the control cover and lift the cover off the
cooktop, then unplug the two wires from
the surface unit indicator light terminals.
If you are replacing the indicator light,
unsnap it from the cover, and install a new
one in its place.
OFF
HI
10
9
8
7
6
4
3
2
LO
CONTROL
KNOB
LONG
TORX SCREW
SHORT
TORX SCREW
METAL
INSERT
CONTROL
COVER
CONTROL
PANEL
HEX SCREWS (4)
SURFACE UNIT
INDICATOR LIGHT
CONTROL
COVER
3-3
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 3-3
Removing A Control Switch
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Remove the control cover (use the proce-
dure shown on page 3-2).
2. Disconnect the wires from the old control
switch and reconnect them to the new
one.
BR
Y
OR
BK R
BK
BR
TOP
PL
1L2
H1H2
4
2
FAN
LR
LF
RR
RF
3-4
Removing The Cooktop
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Turn off the electrical power to the
cooktop.
2. Remove the modules, accessories, and
air grille from the cooktop and set them
aside.
NOTE: If the fan motor is supported by some-
thing other than the cooktop, remove the six
screws from the top of the vent housing (see
below) to release it from the cooktop. This will
make it easier to remove the cooktop from the
cabinet without disturbing the ductwork.
3. Raise the cooktop just enough to slide
two boards, or an equivalent support,
between it and the countertop. Also slide
a pad under the ends of the boards to
keep them from scratching the countertop.
BOARDS
REMOVE 6 SCREWS AT
THIS LOCATION TO
REMOVE VENT HOUSING
FROM COOKTOP
3-5
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 3-5
4. Remove the five control knobs from the
control shafts.
5. Remove the indicated torx screw and the
metal insert from each of the the controls
and remove the control panel.
6. Remove the four hex-head screws from
the control cover.
OFF
HI
10
9
8
7
6
4
3
2
LO
CONTROL
KNOB
TORX
SCREW
METAL
INSERT
CONTROL
PANEL
HEX SCREWS (4)
CONTROL
COVER
7. Remove the 10-screws shown in the illus-
tration and lift the top off the burner box.
REASSEMBLY NOTE: When you install the
control cover, first secure the left mounting
hole of each element control to the cover with
a
short
torx screw. Make sure that you align
the right mounting holes after you tighten the
screws so that you can install the longer torx
screws later. Also use two
short
torx screws
to secure the fan control to the control cover.
Position the fan control with the flatted shaft
facing the front.
2 HEX-HEAD
SCREWS
BURNER BOX
COOKTOP
4 SCREWS
AT THIS LOCATION
4 SCREWS
AT THIS LOCATION
3-6
Removing A Terminal Block
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Refer to page 3-4 and remove the cooktop
from the countertop.
2. To remove the rear terminal block, re-
move the seven indicated hex-head
screws.
To remove the front terminal block,
remove the two indicated torx screws and
the four hex-head screws from the burner
box, then remove the three hex-head
screws from the front terminal block.
3. Lift the end of the cooktop just enough to
remove the terminal block you are servic-
ing.
REAR MOUNTING BRACKET
FRONT MOUNTING BRACKET
REAR TERMINAL BLOCK
BURNER BOX
REMOVE THESE
2 TORX SCREWS
TO ACCESS THE FRONT
TERMINAL BLOCK ONLY
REMOVE THESE
4 HEX-HEAD
SCREWS
TO REMOVE EITHER
TERMINAL BLOCK
HEX-HEAD
SCREWS
HEX-HEAD
SCREWS
FRONT
TERMINAL BLOCK
3-7
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 3-7
Removing The Fan Motor
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Turn off the electrical power to the
cooktop.
2. Remove the four hex-head nuts from the
fan motor.
3. Unplug the quick-disconnects from the
fan motor and remove the motor from the
vent housing.
4. Loosen the setscrew on the fan drum hub
and slide the fan drum off the shaft of the
old motor.
5. Remove the three cover mounting screws
and remove the old motor and strain relief
from the motor cover, then reinstall the
new motor and strain relief into the cover,
and secure the motor with its three screws.
VENT HOUSING QUICK-
DISCONNECTS
STRAIN
RELIEF
MOTOR HOUSING
STUD (4)
FAN DRUM
MOTOR COVER
FAN MOTOR
COVER MOUNTING
SCREW (3)
MOTOR MOUNTING
HEX-NUTS (4)
DRUM
SETSCREW
3-8
MODULE COMPONENTS
The Ceramic Surface Unit RCM30DB/Q
Removing The Glass, Element, Or Limiter
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
3. Remove the seven hex-head screws from
around the ceran glass frame and lift it off
the base.
4. If you are replacing the ceran glass, re-
move the eight clips and push the old
glass out of the frame, then install the
new glass and clips. Make sure that you
install the new glass with the large ele-
ment outline toward the raised opening in
the frame.
1. Turn off the electrical power to the
cooktop.
2. Make sure that the ceran glass is cool,
then unplug the ceramic surface unit from
the cooktop, and position it on a padded
work surface.
LIFT THIS
END OF UNIT
CLIP
GLASS FRAME
FRAME
OPENING
BASE
CERAN
GLASS
BASE SCREW (7)
3-9
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 3-9
NOTE: If you are replacing an element, per-
form steps 5 and 6. If you are replacing just a
limiter, proceed to step 7.
5. With the wires connected to the termi-
nals, lift the old element out of the base,
and install the new one in its place with
the terminals positioned the same as the
old one.
6. One at a time, disconnect the wires from
the terminals of the old element, and re-
connect them to the same terminal loca-
tions on the new one.
7. Lift the element with the defective limiter
so you can access the bottom, and re-
move the screws from the old limiter, then
pull the sensing tube out of the element,
and remove the limiter.
LIMITER
ELEMENT SENSOR TUBE
3-10
The Coil Surface Unit RCM10DB/Q
Removing A Coil Element & Connector
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Turn off the electrical power to the
cooktop.
2. Make sure that the coil element you are
removing is cool.
3. To remove a coil element, lift the front of
the coil element, unplug it from the con-
nector, and remove it.
4. To replace the coil element connector,
remove the coil module from the cooktop.
COIL MODULE
5. Remove both coil elements, (see step 3),
as well as the reflector bowls from the
module.
6. Remove the seven hex-head screws from
around the coil module top and lift it off
the base.
7. Remove the terminal block mounting
bracket screw from the bottom of the base.
8. Slide the mounting bracket and the insu-
lator away from the terminal block so that
you can access the prong wire screw.
9. Remove the prong wires from the prong
for the defective coil element connector
and install the wires from the new con-
nector in their place.
3-11
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 3-11
OPENING
COIL MODULE
TOP
COIL ELEMENT
CONNECTOR
COIL ELEMENT
CONNECTOR
SCREW
BASE
BASE SCREW (7)
TERMINAL
BLOCK
PRONG
WIRE SCREW PRONG
INSULATOR
PIN
MOUNTING
BRACKET
MOUNTING
BRACKET SCREW
3-12
The Grill RCM20DB
Removing The Grill Element
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Turn off the electrical power to the
cooktop.
2. Make sure that the grill element is cool.
3. To remove the grill element, remove the
grill grates from the cooktop.
4. Unplug the grill element and remove it.
3-13
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 3-13
Removing A Terminal Plug Connector
WARNING
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
CAUTION
Personal Injury Hazard
When you work on the cooktop, be careful
when handling the sheet metal parts. Sharp
edges may be present and you can cut
yourself if you are not careful.
1. Turn off the electrical power to the
cooktop.
2. Make sure that the module you are servic-
ing is cool and remove it from the cooktop.
3. Remove the seven hex-head screws from
around the module top and lift it off the
base.
4. Remove the terminal block mounting
bracket screw from the bottom of the base.
5. Slide the mounting bracket and the insu-
lator away from the terminal block.
6. Replace the defective part.
7. Reassemble the terminal plug connector
so that the pin and prongs fit into their
terminal block openings and mount the
bracket to the base with its screw. NOTE:
Make sure to reinstall the shunt be-
tween the indicated prongs if you are
servicing a grill element, otherwise the
fan motor will not operate.
BASE
TERMINAL
BLOCK
PRONG
WIRE SCREW PRONG
INSULATOR
PIN
MOUNTING
BRACKET
BASE SCREW (7)
SHUNT
(ONLY ON GRILL
ASSEMBLY CONNECTOR)
4TH PRONG
(ONLY ON GRILL
ASSEMBLY CONNECTOR)
MOUNTING
BRACKET SCREW
3-14
— NOTES —
4-1
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 4-1
COMPONENT TESTING
caution at all times. If test points are not
easily accessible, disconnect power, attach
test equipment, and reapply power to test.
Certain procedures in this section require
electrical tests or measurements while power
is applied to the cooktop. Exercise extreme
WARNING
Electrical Shock Hazard
TROUBLESHOOTING
CONTROL SWITCH
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
WARNING
Test Procedure
Refer to page 3-3 for the procedure for servic-
ing a control switch.
To test a switch, perform the following steps:
1. Use an ohmmeter and set the range switch
to R x 1.
2. With no power applied and the switch
turned ON, you should obtain continuity
between the terminals, as indicated.
Switches (ON) Continuity Between Terminals:
L1–H1 L1–P H2–L2
H1
L1
L2
P
H2
H1 PL2
L1
H2
TOP
4-2
RADIANT (CERAN)
Dia. Watts Ohms
6
"
1200 46 ±5
8
"
1800 33 ±5
ELEMENT
TERMINALS
SENSOR
TERMINALS
COOKTOP SENSING ROD HEATING COIL
INSULATION SENSOR
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
WARNING
Test Procedure
Refer to page 3-8 for the location of the ele-
ments and the procedure for servicing them.
To test an element, perform the following steps:
1. Use an ohmmeter and set the range switch
to R x 1.
2. With no power applied, disconnect one
wire from the element terminals.
3. You should obtain the reading for the
indicated element:
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
WARNING
Test Procedure
Refer to page 3-8 for the procedure for servicing
a limiter.
To test a limiter, perform the following steps:
1. Use an ohmmeter and set the range to
R x 1.
2. With no power applied, touch the ohmme-
ter leads to the following terminals. You
should obtain the following readings at
the indicated temperature:
1A and 2A opens @ 1025˚F.
If the readings are not within the range shown,
the limiter is defective and should be replaced.
2A
1A
2A
1A
LIMITER
SENSOR TUBE
ALL WATTAGES ARE AT 240 VOLTS, A.C.
RADIANT ELEMENTSLIMITER
4-3
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 4-3
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
WARNING
Test Procedure
Refer to page 3-10 for the location of the
elements and the procedure for servicing them.
To test an element, perform the following steps:
1. Use an ohmmeter and set the range switch
to R x 1.
2. With no power applied, disconnect one
wire from the element terminals.
3. You should obtain the reading for the
indicated element:
Electrical Shock Hazard
Disconnect from electrical supply before ser-
vicing unit.
Failure to do so could result in electrical
shock or other personal injury.
WARNING
Test Procedure
Refer to page 3-12 for the location of the
elements and the procedure for servicing them.
To test an element, perform the following steps:
1. Use an ohmmeter and set the range switch
to R x 1.
2. With no power applied, disconnect one
wire from the element terminals.
3. You should obtain the reading for the
indicated element:
COIL ELEMENT
Dia. Watts Ohms
6
"
1250 46 ±5
8
"
2100 27 ±5
ALL WATTAGES ARE AT 240 VOLTS, A.C.
COIL ELEMENTS GRILL ELEMENTS
GRILL ELEMENT
Loc. Watts Ohms
Front 1400 40 ±5
Back 1400 40 ±5
ALL WATTAGES ARE AT 240 VOLTS, A.C.
FRONT ELEMENT
BACK ELEMENT
4-4
Troubleshooting Chart
PROBLEM SOLUTIONPOSSIBLE CAUSE
No line voltage.
Loose or bad wiring.
Defective element.
Repair or replace wiring (see
wiring diagrams).
Test and/or replace element.
Element does not heat.
Line voltage should be minimum
240-volts. If necessary, electri-
cian should repair cause for low
line voltage.
Repair or replace wiring (see
wiring diagrams).
Test and/or replace switch.
Element barely heats. Low line voltage.
Loose or bad wiring connection at
element or terminal block.
Defective cooktop control switch.
Line voltage should be minimum
240-volts. Electrician should re-
pair cause for low line voltage.
Test and/or replace element.
Defective cooktop element.
Low line voltage.Element will not heat higher than
low-medium.
Customer using improper cookware.
Defective cooktop control switch.
Evaluate suitability of cookware.
Test and/or replace switch.
Element heats up normally, but
drops to lower setting automati-
cally.
Replace indicator light.
Replace indicator light assembly
and wiring.
Loose or defective light.
Loose or bad wiring to indicator
light assembly.
On indicator light does not work.
5-1
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 5-1
L1 N GROUND L2
FAN
SWITCH
GRILL
ELEMENT
SHUNT
FAN
MOTOR
INDICATOR
LIGHT
GRILL
ELEMENT
SHUNT
BK BR
BR
BR V
Y
V
Y
BK BR
W
BR
OR
H1 H2 L2
P
L1
BL
BL
BL
W
GN
GREEN
WHITE
BLACK RED
R
R
R
BK OR OR
BR
H1
P
L1
LR
INFINITE
SWITCH
H2 L2
LF
INFINITE
SWITCH
LR
INFINITE
SWITCH
LF
INFINITE
SWITCH
LF
ELEMENT
LR
ELEMENT
BK BR BR
BR
OR
H1 H2 L2
P
L1
BK OR
BR BR
H1
P
L1
LR
INFINITE
SWITCH
H2 L2
LF
INFINITE
SWITCH
RR
INFINITE
SWITCH
RF
INFINITE
SWITCH
RF
ELEMENT
RR
ELEMENT
SCHEMATIC DIAGRAM
Model RC8700ED
TECH TIPS
5-2
WIRING DIAGRAM
Model RC8700ED
FAN
MOTOR
FAN
SWITCH
INDICATOR
LIGHT
OR
OR BK
BK
BR
BL
BL
BRVYBLBRVY
BK
BR V BR Y BR V BR Y
R OR BK R OR BK R OR BK R
WW
GN
N
WHITE
L2
RED
L1
BLACK
GND
GREEN
LR INF.
SWITCH
RR
ELEMENT
GRILL
ELEMENT
SHUNT
GRILL
ELEMENT
SHUNT
RIGHT
GRILL
RECEPTACLE
LEFT
GRILL
RECEPTACLE
RF
ELEMENT
P L1 L2
H2H1
LF INF.
SWITCH
P L1 L2
H2H1
RR INF.
SWITCH
P L1 L2
H2
H2
RF INF.
SWITCH
P L1 L2
H2H1H1
LR
ELEMENT
LF
ELEMENT
5-3
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 5-3
SCHEMATIC DIAGRAM
Model RC8720ED
L1 N GROUND L2
FAN
SWITCH
GRILL
ELEMENT
SHUNT
FAN
MOTOR
INDICATOR
LIGHT
BK BR
BR
BR V
Y
V
YY
BK BR
W
BR
OR
H1 H2 L2
P
L1
BK
BL
W
GN
GREEN
WHITE
BLACK RED
R
R
R
BK OR OR
BR
H1
P
L1
LR
INFINITE
SWITCH
H2 L2
LF
INFINITE
SWITCH
LR
INFINITE
SWITCH
LF
INFINITE
SWITCH
LF
ELEMENT
LR
ELEMENT
BK V V
OR
H1 H2 L2
P
L1
BK OR
Y
H1
P
L1
LR
INFINITE
SWITCH
H2 L2
LF
INFINITE
SWITCH
RR
INFINITE
SWITCH
RF
INFINITE
SWITCH
RF
ELEMENT
RR
ELEMENT
5-4
WIRING DIAGRAM
Model RC8720ED
FAN
MOTOR
FAN
SWITCH
INDICATOR
LIGHT
OR
OR BK
BK
BR
BL
VVBLBRVY YY
BK
BR V BR Y V V YY
R OR BK R OR BK R OR BK R
WW
GN
N
WHITE
L2
RED
L1
BLACK
GND
GREEN
LR INF.
SWITCH
RR
ELEMENT
GRILL
ELEMENT
SHUNT
LEFT
GRILL
RECEPTACLE
RF
ELEMENT
P L1 L2
H2H1
LF INF.
SWITCH
P L1 L2
H2H1
RR INF.
SWITCH
P L1 L2
H2
RF INF.
SWITCH
P L1 L2
H2H1H1
LR
ELEMENT
LF
ELEMENT
5-5
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 5-5
STRIP CIRCUITS
RADIANT ELEMENT
COIL ELEMENT
GRILL ELEMENT
L1
N
L2
P
H1
BK BR
OW
YR
L1 H22A 1A L2
INFINITE
SWITCH
INFINITE
SWITCH RADIANT
ELEMENT SENSOR
“ON”
INDICATOR
L1
N
L2
P
H1L1
BK BR
OW
YR
H2 L2
INFINITE
SWITCH
INFINITE
SWITCH COIL
ELEMENT
“ON”
INDICATOR
L1
N
L2
P
H1L1 H2 L2
INFINITE
SWITCH
INFINITE
SWITCH GRILL
ELEMENT
FAN MOTOR
“ON”
INDICATOR
GRILL
ELEMENT
SHUNT
BK BR
OW
W
YR
BL
5-6
SPECIFICATIONS
Model RC8700EDB/W
MODEL NUMBER RC8700EDB RC8700EDW
Cooktop Colors:
Perimeter Finish Procelain Black Porcelain White
Control Panel Black White
Control Panel Graphics White Ascot Grey
Control Panel Accents Persimmon Red Persimmon Red
Dimensions (Inches):
Overall Width 29-7/8 29-7/8
Overall Depth 21-1/2 21-1/2
Cutout Width 28-7/8 28-7/8
Cutout Depth 20-7/8 20-7/8
Blower Assembly Clearance
(Below Countertop) 16-7/16 16-7/16
Cooktop Features:
Right Bay Open Open
Left Bay Open Open
Number of Bays Convertible Double Convertible Double Convertible
Control Location Right Side Right Side
Indicator Light On/Off On/Off
Control Type Standard Mechanical Standard Mechanical
Blower 300 CFM 300 CFM
Blower Switch On/Off Dial On/Off Dial
Other Specifications:
Total Connected Load 7.7 kW 7.7 kW
Electrical Requirements 32.1 Amp Circuit 32.1 Amp Circuit
Junction Box w/o Power Cord Yes Yes
Warranty 1-Year Full -— 2-Year Parts 1-Year Full -— 2-Year Parts
Approximate Weight 51 Lbs. 51 Lbs.
Agency Approval U.L. - C.S.A. U.L. - C.S.A.
5-7
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 5-7
MODEL NUMBER RC8700EDB RC8700EDW
Approved Modules:
2-Elements Fixed Coil Module RCM10DB RCM10DQ
2-Elements Radiant Ceran RCM30DB RCM10DQ
Grill (Left Bay Only) RCM20DB RCM20DB
Approved Modules—
2-Elements Fixed Coil : RCM10DB RCM10DQ
Size & # of Turns of Each element 8" coil w / 5-Turns
6" coil w / 4-Turns
8" coil w / 5-Turns
6" coil w / 4-Turns
Right Front 8" Element @ 2100-Watts 8" Element @ 2100-Watts
Right Rear 6" Element @ 1250-Watts 6" Element @ 1250-Watts
Bowl Material Chrome Chrome
Approximate Weight 9 Lbs. 9 Lbs.
Approved Modules—Grill: RCM20DB RCM20DB
Grill Grate Black Black
Grill Grate Finish Whitford Whitford
Dual Circuit Grill Element Yes - 2800-Watts Yes - 2800-Watts
Automatic Blower w / Grill Yes Yes
Approximate Weight 12 Lbs. 12 Lbs.
Accessory: Grill Cover RCM50DB RCM50DQ
Accessory: Griddle RCM40DB RCM40DB
Approved Modules—
2-Element Radiant Ceran: RCM30DB RCM30DQ
Quick-Start Series 7 Elements Yes Yes
Front 8" Element @ 1800-Watts 8" Element @ 1800-Watts
Rear 6" Element @ 1200-Watts 6" Element @ 1200-Watts
Glass Pattern Whirlpool Design Whirlpool Design
Warranty 1-Year Full -— 5-Years Glass 1-Year Full -— 5-Years Glass
Approximate Weight 11 Lbs. 11 Lbs.
Approved Accessory:
Wall Vent Cap 3-1/4" x 10" RCM3D RCM3D
Wall Vent Cap 6" Round RCM6D RCM6D
Wall Vent Cap 5" Round RCM5D RCM5D
Literature:
Use & Care Guide 4381591 4381591
Wiring Diagram 4381593 4381593
Installation Instructions 4381589 4381589
5-8
Model RC8720EDB/W
MODEL NUMBER RC8720EDB RC8720EDW
Cooktop Colors:
Perimeter Finish Procelain Black Porcelain White
Control Panel Black White
Control Panel Graphics White Ascot Grey
Control Panel Accents Persimmon Red Persimmon Red
Air Grille Black White
Dimensions (Inches):
Overall Width 29-7/8 29-7/8
Overall Depth 21-1/2 21-1/2
Cutout Width 28-7/8 28-7/8
Cutout Depth 20-7/8 20-7/8
Blower Assembly Clearance
(Below Countertop) 16-7/16 16-7/16
Cooktop Features:
Right Bay 2-Elements—Fixed Coil 2-Elements—Fixed Coil
Left Bay Open Open
2-Elements Fixed Coil (Right Bay) 8" Coil with 5-Turns
6" Coil with 4-Turns
8" Coil with 5-Turns
6" Coil with 4-Turns
Right Front 8" Element @ 2100-Watts 8" Element @ 2100-Watts
Right Rear 6" Element @ 1250-Watts 6" Element @ 1250-Watts
Number of Bays Convertible Single Convertible Single Convertible
Control Location Right Side Right Side
Indicator Light On/Off On/Off
Removable Coils & Bowls Yes Yes
Control Type Standard Mechanical Standard Mechanical
Bowl Material Chrome Chrome
Blower 300 CFM 300 CFM
Blower Switch On/Off Dial On/Off Dial
Other Specifications:
Total Connected Load 7.7 kW 7.7 kW
Electrical Requirements 32.1 Amp Circuit 32.1 Amp Circuit
Junction Box w/o Power Cord Yes Yes
Warranty 1-Year Full -— 2-Year Parts 1-Year Full -— 2-Year Parts
Approximate Weight 53 Lbs. 53 Lbs.
Agency Approval U.L. - C.S.A. U.L. - C.S.A.
5-9
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 5-9
MODEL NUMBER RC8720EDB RC8720EDW
Approved Modules:
2-Elements Fixed Coil Module RCM10DB RCM10DQ
2-Elements Radiant Ceran RCM30DB RCM30DQ
Grill (Left Bay Only) RCM20DB RCM20DB
Approved Modules—
2-Elements Coil: RCM10DB RCM10DQ
Size & # of Turns of Each element 8" Coil w / 5-Turns
6" Coil w / 4-Turns
8" Coil w / 5-Turns
6" Coil w / 4-Turns
Right Front 8" Element @ 2100-Watts 8" Element @ 2100-Watts
Right Rear 6" Element @ 1250-Watts 6" Element @ 1250-Watts
Bowl Material Chrome Chrome
Approximate Weight 9 Lbs. 9 Lbs.
Approved Modules—Grill: RCM20DB RCM20DB
Grill Grate Black Black
Grill Grate Finish Whitford Whitford
Dual Circuit Grill Element Yes - 2800-Watts Yes - 2800-Watts
Automatic Blower w / Grill Yes Yes
Approximate Weight 12 Lbs. 12 Lbs.
Accessory: Grill Cover RCM50DB RCM50DQ
Accessory: Griddle RCM40DB RCM40DQ
Approved Modules—
2-Element Radiant Ceran: RCM30DB RCM30DQ
Quick-Start Series 7 Elements Yes Yes
Front 8" Element @ 1800-Watts 8" Element @ 1800-Watts
Rear 6" Element @ 1200-Watts 6" Element @ 1200-Watts
Glass Pattern Whirlpool Design Whirlpool Design
Warranty 1-Year Full -— 5-Years Glass 1-Year Full -— 5-Years Glass
Approximate Weight 11 Lbs. 11 Lbs.
Approved Accessory:
Wall Vent Cap 3-1/4" x 10" RCM3D RCM3D
Wall Vent Cap 6" Round RCM6D RCM6D
Wall Vent Cap 5" Round RCM5D RCM5D
Literature:
Use & Care Guide 4381591 4381591
Wiring Diagram 4381593 4381593
Installation Instructions 4381589 4381589
5-10
MODEL NUMBER DESIGNATION
MODEL NUMBER R C 8 7 0 0 E D B 0
INTERNATIONAL SALES IND.
OR MARKETING CHANNEL, IF PRESENT
PRODUCT GROUP
R = ELECTRIC
S = GAS
PRODUCT IDENTIFICATION
A = ACCESSORY H = HOODS
C = COOKTOP K = KITS
E = EYE-LEVEL S = SET-INS
F = FREESTANDING
MODEL SIZE
0 = 20" OR 24" FREESTANDING
1 = 24" OR 27" BUILT IN OVEN
3 = 30" FREESTANDING
4 = 40" FREESTANDING
5 = 36" FREESTANDING
6 = 30" SET-IN RANGES
8 = BUILT-IN COOKTOPS
9 = EYE-LEVEL DOUBLE OVEN
OVEN TYPE (DOES NOT APPLY TO COOKTOPS)
0 THRU 1 = STANDARD PORCELAIN
2 THRU 5 = CONTINUOUS CLEAN
6 THRU 9 = PYROLYTIC SELF-CLEAN
FEATURE / VARIATIONS
3 = SEALED BURNER GLASS TOP
4 = BUILDER - CERAMIC COOKING SURFACE
5 = HIGH SPEED COIL ELEMENT
6 = RETAIL - CERAMIC COOKING SURFACE
7 = SOLID ELEMENT WITHOUT TOUCH CONTROL
8 = OPEN COIL ELEMENTS WITH TOUCH CONTROL
9 = SOLID ELEMENTS WITH TOUCH CONTROL
DOOR TYPE (DOES NOT APPLY TO COOKTOPS)
B = SOLID BLACK GLASS
O = METAL OVEN DOOR
P = WINDOW BLACK GLASS
FEATURE CODE
E = ELECTRONIC IGNITION (GAS ONLY)
S = STANDING IGNITION ( GAS ONLY)
C = COLOR COORDINATED GLASS
X = NOT DEFINED
YEAR OF INTRODUCTION
D = 1995
E = 1996
COLOR CODE
B = BLACK
Q = WHITE
ENGINEERING CHANGE (0, 1, 2, ETC.)
5-11
Cooking Products Service Manual
Original April, 1996 4321972
© 1996 Whirlpool Corporation Page 5-11
WHIRLPOOL ELECTRIC MODULAR DOWNDRAFT
COOKTOP WARRANTY
LENGTH OF WARRANTY
ONE YEAR FULL WARRANTY
From Date of Installation.
WHIRLPOOL WILL PAY FOR:
FSP® replacement parts and repair labor costs to correct defects in
materials or workmanship. Service must be provided by an authorized
Whirlpool service company.
WHIRLPOOL WILL NOT PAY FOR:
A. Service calls to:
1. Correct the installation of the cooktop.
2. Instruct you how to use the cooktop.
3. Replace house fuses or correct house wiring.
B. Repairs when cooktop is used in other than normal, single family home use.
C. Pickup and delivery. This product is designed to be repaired in the home.
D. Damage to the cooktop resulting from accident, misuse, fire, flood, acts of God, or use of products not approved by
Whirlpool.
E. Repairs to the ceramic cooktop if it has not been cared for as recommended in the Use And Care Guide.
F. Repairs to parts or systems caused by unauthorized modifications made to the appliance.
WHIRLPOOL CORPORATION SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. Some states do not allow
the exclusion or limitation of incidental or consequential damages, so this exclusion or limitation may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state-to-state.
Outside the United States, a different warranty may apply. For details, please contact your authorized Whirlpool dealer.
If you need service, first see the “Assistance or Service” section of the Use and Care Guide. After checking “Assistance or Service,’’ additional
help can be found by calling our Consumer Assistance Center telephone number, 1-800-253-1301, from anywhere in the U.S.A.
5-12
— NOTES —
